SBASAW9 December   2024 ADC168M102R-SEP

PRODUCTION DATA  

  1.   1
  2. 1 Features
  3. 2 Applications
  4. 3 Description
  5. 4 Pin Configuration and Functions
  6. 5 Specifications
    1. 5.1 Absolute Maximum Ratings
    2. 5.2 ESD Ratings
    3. 5.3 Recommended Operating Conditions
    4. 5.4 Thermal Information
    5. 5.5 Electrical Characteristics
    6. 5.6 Timing Requirements
    7. 5.7 Switching Characteristics
    8. 5.8 Timing Diagrams
    9. 5.9 Typical Characteristics
  7. 6 Detailed Description
    1. 6.1 Overview
    2. 6.2 Functional Block Diagram
    3. 6.3 Feature Description
      1. 6.3.1 Analog
        1. 6.3.1.1 Analog Inputs
        2. 6.3.1.2 Analog-to-Digital Converters (ADCs)
        3. 6.3.1.3 CONVST
        4. 6.3.1.4 CLOCK
        5. 6.3.1.5 RESET
        6. 6.3.1.6 REFIOx
      2. 6.3.2 Digital
        1. 6.3.2.1 Mode Selection Pins M0 and M1
        2. 6.3.2.2 Half-Clock Mode (Default Mode After Power-Up and Reset)
        3. 6.3.2.3 Full-Clock Mode (Allowing Conversion and Data Readout Within 1µs, Supported In Dual Output Modes)
        4. 6.3.2.4 2-Bit Counter
    4. 6.4 Device Functional Modes
      1. 6.4.1 Power-Down Modes and Reset
        1. 6.4.1.1 Power-Down Mode
        2. 6.4.1.2 Sleep Mode
        3. 6.4.1.3 Auto-Sleep Mode
        4. 6.4.1.4 Reset
    5. 6.5 Programming
      1. 6.5.1 Read Data Input (RD)
      2. 6.5.2 Serial Data Outputs (SDOx)
        1. 6.5.2.1 Mode I
        2. 6.5.2.2 Mode II (Half-Clock Mode Only)
        3. 6.5.2.3 Special Read Mode II (Half-Clock Mode Only)
        4. 6.5.2.4 Mode III
        5. 6.5.2.5 Fully Differential Mode IV (Half-Clock Mode Only)
        6. 6.5.2.6 Special Mode IV (Half-Clock Mode Only)
      3. 6.5.3 Programming the Reference DAC
  8. 7 Register Map
  9. 8 Application and Implementation
    1. 8.1 Application Information
    2. 8.2 Typical Application
      1. 8.2.1 Design Requirements
      2. 8.2.2 Detailed Design Procedure
      3. 8.2.3 Application Curve
    3. 8.3 Power Supply Recommendations
    4. 8.4 Layout
      1. 8.4.1 Layout Guidelines
        1. 8.4.1.1 Grounding
        2. 8.4.1.2 Digital Interface
      2. 8.4.2 Layout Example
  10. 9 Device and Documentation Support
    1. 9.1 Documentation Support
      1. 9.1.1 Related Documentation
    2. 9.2 Electrostatic Discharge Caution
    3. 9.3 Glossary
    4. 9.4 Trademarks
    5. 9.5 Receiving Notification of Documentation Updates
    6. 9.6 Support Resources
  11. 10Revision History
  12. 11Mechanical, Packaging, and Orderable Information

8.3 Power Supply Recommendations

The ADC168M102R-SEP has two separate supplies: DVDD and AVDD. Use the DVDD pin for the buffers of the digital interface and the AVDD pin for all remaining circuits.

DVDD ranges from 2.3V to 5.5V, allowing the ADC to easily interface with processors and controllers. To limit the injection of noise energy from external digital circuitry, properly filter DVDD. Place a 1µF bypass capacitor between the DVDD pin and the digital ground plane.

AVDD supplies the internal analog circuitry. For optimum performance, a linear regulator generates the analog supply voltage in a 2.7V to 5.5V range for the ADC and the necessary analog front-end.

Connect 1µF bypass capacitors to the analog ground plane such that the current flows through the pad of these capacitors. That is, place the vias on the opposite side of the connection between the capacitor and the power-supply pin of the ADC.